It depends on the hen. Some go broody more often and more regularly than others. They just do whatever the voices in their heads tell them to do.
If you need the eggs from the hen more than you need additional chicks, you can put her in a wire-bottomed cage set up on blocks or sawhorses for a few days until her broody mood passes. Otherwise, let her do her thing and start knitting more little 4-toed booties.